No author listed. Communicable Diseases Intelligence volume 13 issue 7 - 10 April 1989 - whole issue. Commun Dis Intell (2018) [Internet]. 1989 Apr. 10 [cited 2026 Apr. 18];13:1-17. Available from: https://ojs.cdi.cdc.gov.au/index.php/cdi/article/view/2967